Examination of Insulation Wear Modes in Geothermal Logging Cables
- Key words
- Well Tests; Logs; Wireline; Temperature Logs
- Conference
- Geothermal Resources Council Transactions
- Year
- 1985
- Session
- Well logging; Equipment design; Durability testing; Logging
- Language
- English
Abstract
The wear mode of the Tetrafluoroethylene (TFE) insulation used on an electrical logging cable is described. The cable examined in this study was used repeatedly in various harsh geothermal environments. Considering the amount of abuse the cable was subjected to , the TFE performed very well. Grooves were formed on the outside of the insulation as a result of the fluid pressure and the loading from the inner layer of metal armor. Also, indentations on the inside of the insulation were caused by the insulation molding to the conductor strands. If this mode of wear were to continue, the conductors would eventually protrude from the insulation and short out against each other or the cable armor.
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